19171420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23503268

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 587, 710, 1174, 1420, 1633, 2348, 2935, 3266, 5870, 6532, 8165, 11740, 13501, 16330, 27002, 32660, 41677, 54004, 67505, 83354, 135010, 166708, 208385, 270020, 416770, 833540, 958571, 1917142, 3834284, 4792855, 9585710, 19171420]

約数ペア:

[(1, 19171420), (2, 9585710), (4, 4792855), (5, 3834284), (10, 1917142), (20, 958571), (23, 833540), (46, 416770), (71, 270020), (92, 208385), (115, 166708), (142, 135010), (230, 83354), (284, 67505), (355, 54004), (460, 41677), (587, 32660), (710, 27002), (1174, 16330), (1420, 13501), (1633, 11740), (2348, 8165), (2935, 6532), (3266, 5870)]